Sump

[banditpowdercoat]

If glass tank, use glass baffles. Silicone does not stick to acrylic very well. Any glass shop will cut you baffles. Only need 3mm glass for baffles, especially in a 10g tank. Probibally under $20 fro all the glass cut and ground edges. Make the baffles a hair more than 1/8" narrower than the inside of the tank. Easier to install, no wedging/chipping/cracking issues. Silicone fills the gap's reallly well